Company lists · Data refreshed September 2026

Top 25 Enterprise classification consultancies based in Chicago, United States

Name: Enterprise classification consultancies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 83 companies tracked

RevenueBase identified 83 enterprise classification consultancies headquartered in Chicago, United States as of September 2026 and tracks 1,762 professional contacts across them, including 650 with verified work emails. Across the United States, New York is the largest hub for this category (178 companies); Chicago has 83.

This list covers enterprise classification consultancies headquartered in Chicago, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

83Companies

1,762Contacts tracked

650Verified emails

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The 25 largest enterprise classification consultancies based in Chicago, United States

Ranked by team size

Top 25 of 83 enterprise classification consultancies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise classification consultancies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	DLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	201-500	546 contacts →
	Indirect evidence “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Source: RevenueBase Database · checked Sep 29, 2026
2	Weaver Consultants Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	201-500	382 contacts →
	Indirect evidence “From its inception in 1991, Weaver Consultants Group has been founded upon the tenets of attentive and responsive customer service, strong project management, and solid internal…” Source: RevenueBase Database · checked Sep 29, 2026
3	Accretive Solutions	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	501-1,000	217 contacts →
	Indirect evidence “Your World.” Source: RevenueBase Database · checked Sep 29, 2026
4	Dpo&co.	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	187 contacts →
	Indirect evidence “DPO & Co specializes in helping Private Equity firms and their portfolio companies gain fact-based insights during the diligence process and realize post-close synergies and value…” Source: RevenueBase Database · checked Sep 29, 2026
5	HBR Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	501-1,000	106 contacts →
	Indirect evidence “HBR Consulting is now part of Harbor.” Source: RevenueBase Database · checked Sep 29, 2026
6	Source Consulting Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	29 contacts →
	Indirect evidence “Source Consulting Group LLC is the premier full-service consulting firm focusing exclusively on the strategic and operational business process and technology needs of legal and…” Source: RevenueBase Database · checked Sep 29, 2026
7	CTS Impact	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	29 contacts →
	Indirect evidence “CTS Impact is a hands-on business consulting firm focused on delivering practical solutions to complex business issues in the areas of Finance, IT and Human Resources.” Source: RevenueBase Database · checked Sep 29, 2026
8	Strategic Growth Consulting, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	13 contacts →
	Indirect evidence “Strategic Growth Consulting helps small to medium sized professional service companies identify, plan and execute growth strategies bringing over 30 years of experience in the…” Source: RevenueBase Database · checked Sep 29, 2026
9	Catalyst X	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Indirect evidence “We are a management consultancy specializing in catalyzing growth.” Source: RevenueBase Database · checked Sep 29, 2026
10	RAO Solutions	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	8 contacts →
	Indirect evidence “RAO Solutions was formed to affect positive, qualitative and quantitative change within your organization.” Source: RevenueBase Database · checked Sep 29, 2026
11	The Quimera Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “We are a Chicago based consultancy firm established in 2014 to help implement technology solutions for various business areas and industries.” Source: RevenueBase Database · checked Sep 29, 2026
12	Level X Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	4 contacts →
	Indirect evidence “Level X Consulting (Lx) was founded on a set of core values which guide our Operating Paradigm, business relationships, and work product.” Source: RevenueBase Database · checked Sep 29, 2026
13	BEN Jacobson Consultants	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Ben Jacobson Consultants was founded in 2001 and has been helping businesses operate with maximum efficiency ever since.” Source: RevenueBase Database · checked Sep 29, 2026
14	Lake Michigan Partners	Indirect evidence	Chicago, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “Special Project Consultants Lake Michigan Partners is an independent management consulting firm located in Chicago, Illinois with projects run managed nationally.” Source: RevenueBase Database · checked Sep 29, 2026
15	HI Tech Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “Hi Tech Consulting is an agency committed to helping entrepreneurs and small businesses optimize their time by optimizing and automating processes that increase their impact and…” Source: RevenueBase Database · checked Sep 29, 2026
16	Bright PEI Consulting LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “We provide Business and Management Consulting Service to Startup and Small business.” Source: RevenueBase Database · checked Sep 29, 2026
17	Onboard ERP	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	2 contacts →
	Indirect evidence “Onboard ERP, a part of Optimum Technology Transfer Ltd, support ERP transformation projects across the globe.” Source: RevenueBase Database · checked Sep 29, 2026
18	Rush Street Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Rush Street Consulting helps entrepreneurs build successful businesses.” Source: RevenueBase Database · checked Sep 29, 2026
19	Lynam & Associates	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Lynam & Associates is as a transactional and commercial consultancy serving and advising entrepreneurs, closely held U.S.” Source: RevenueBase Database · checked Sep 29, 2026
20	BIZ Esteem, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	2 contacts →
	Indirect evidence “Biz Esteem is a business development consulting services firm in both the B2B and B2C landscape with proven results in growing revenue, profit and share.” Source: RevenueBase Database · checked Sep 29, 2026
21	Group Solaris	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	1 contacts →
	Partial evidence “We are a boutique advisory firm focused on increasing our mid-market client’s enterprise value.” Source: RevenueBase Database · checked Sep 29, 2026
22	Kamden Strategy Group, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Partial evidence “KAMDEN Strategy Group is a management consulting firm providing business owners, corporate executives, nonprofit leaders and boards with strategy resources and enterprise planning…” Source: RevenueBase Database · checked Sep 29, 2026
23	Software Guru, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence “21st Century E-Business Solutions Software Guru provides consulting services to the Financial Services community as well as all Small to Mid-Sized Businesses.” Source: RevenueBase Database · checked Sep 29, 2026
24	Avant Strategy	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence “Avant Strategy is a management consulting firm built on over two decades of executive experience leading strategic growth, business transformation, and global M&A initiatives for…” Source: RevenueBase Database · checked Sep 29, 2026
25	Transparent Analysis	Indirect evidence	Chicago, United StatesHQ checked Sep 29, 2026	1-10	1 contacts →
	Indirect evidence “Transparent Analysis provides management consulting services to small and medium sized businesses in the telecom and technology sectors.” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise classification consultancies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names enterprise classification consultancies.
Partial evidence: Its own public description names part of enterprise classification consultancies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise classification consultancies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 83 enterprise classification consultancies based in Chicago, United States

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Enterprise classification consultancies based in Chicago, United States at a glance

As of Sep 29, 2026

36.9%Verified-email coverage

21.2Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 83 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among enterprise classification consultancies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Chicago, United States whose own description of what they do matches “enterprise classification consultancies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names enterprise classification consultancies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among enterprise classification consultancies, and records with no verified work email. Companies headquartered outside Chicago are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 650 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Enterprise classification consultancies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names enterprise classification consultancies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many enterprise classification consultancies are there based in Chicago, United States?

RevenueBase identified 83 enterprise classification consultancies headquartered in Chicago, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

DLC, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most enterprise classification consultancies?

New York leads the United States with 178 headquartered companies, followed by Atlanta (116) and Houston (110). Chicago has 83.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 650 verified decision-maker contacts tracked across these 83 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.